morgan



. N0. 608.263. I Patented Aug. 2, I898.

' J. O. MORGAN.

DRIVINGIECHANISM FOR GRAIN CONVEYEBS. 4 v (Application filed 0&4, 1891. (no Model.)

MIM nil ll UNITED STATES PATENT OFF CE.

JOHN O. MORGAN, OF INDIANAPOLIS, INDIANA,- ASSIGNOR TO THE PNEU- MATIG ELEVATOR AND WVEIGHER COMPANY, OF SAME PLACE.

DRIVING MECHANISM FOR GRAIN-CONVEYERS.

SPECIFICATION forming part of Letters Patent No. 608,263, dated August 2, 1898. Application filed October 4,1897. Seria1 No.654, Q. (No model.)

To all whom it may concern.- 1

Beit knownthat'l, JOHN O. MORGAN, a citizen of the United States, residing at Indian.- apolis, in the county of Marion andState of is taken directly from the threshing-machine or separator and elevated to a weigher that at the times of stopping and starting the machine a considerable amount of grain would accumulate in the lower portion of the elevator. This has been peculiarly true in the case of pneumatic elevators, in which during the time the I machine is running slowly in stopping the blast of airis not sufficient to throw up the grain, while the conveyer, which conveys the grain thereto, being positively moved, acts to continuously, although slowly, carry grain forward until the machine has completely stopped. t

The object of my said invention is to provide a means whereby when the speed of the machinery decreases the conveying device shall be caused to stop movement altogether, which movement shall only be resumed when the normal speed of the machine has been again attained. I accomplish this object by combining with the shaft of th'e'transverselylocated grain conveyer. located underneath the separator a friction-clutch and a speedactuated device for operating said clutch,

whereby said clutch will be caused to be engaged when the machine is running at a normal speed, but will automatically become disengaged, and the motionof the shaft thus stopped, when the machine is running at a slower speed.

Referring to the accompanying drawings, 7

which are made a part hereof, and on which similar letters of reference indicate'similar when running'at'a slowspeed; Fig. 2, a top or plan View, on an enlarged scale, of the clutch and mechanism for operating the same; Fig. 3, a horizontal sectional view on the dotted line 3 3,in.Fig. 4, showing also fragments at botlrends of the conveyer; and Fig. 4, a detaitend elevation of the clutch and thespced-actuated mechanism for operatin g it.

In said drawings the portions marked A represent the body of the threshing-machine or separator; B, the receiving end of a pneumatic elevator and weigher similar to that shown in an application filed by one James B. Schuman October 7, 1897, Serial No. 654,453;

O, the tube or chute to said elevator; D, the

separating-head thereto; E, the grain-con-.

veyin g chute from said head; F, the weigherhopper thereof; G, the conveyer-trough on the under side of the, threshing-machine or separator ;-H, the conveyer-shaft I, the driving-pulley on said shaft and which 'also forms one clutch-half; J ,the other clutch-half; K, levers whereby the clutch-half J is operated in one direction; L, rods connecting said levers to' the clutch part J, and M a spring whereby saidxclutch-half is operated in the other direction. 7

The threshing-machine A and the pneumatic elevator and-weigher composed of the parts B, O, D, E, and F and the conveyerportion G are in themselves not peculiar to my invention, although they constitute the apparatus to which m'y'invention is added and to the efficiencyof which it greatlycontributes.- I

The shaft His a screw conveyer-shaft and operates in the usual manner toconvey the grain as it drops from the separator into the trough Gto one Qside'of the machine and there discharge it into the elevator bottom B, as shown in Fig. 3. Upon this shaft I prefer toplace a sleeve H, upon which the pulley. I and levers K are mounted. This sleeve is free to revolve on said shaft, but is prevented from moving longitudinally there-- on by a collar h or otherwise.

The pulley I, is mounted on the sleeve 11' and revolves therewith or thereon, according totheoonstruction. Besidesbeingabelt-pulleyit forms half the clutch, the internal clutch-face being formed on one side thereof,

ICO

as shown most plainly in Fig. 0. The clutchhalf J is also mounted 011 the shaft II and is permitted a movement longitudinally thereof, but is held from revolving thereon by a splinej, engaging with a sleeve which is rigidly connected to the shaft II. Thus when said cl utch-half is thrown into engagement with the clutch-face on the pulley I the said shaft II is revolved and the conveyor is driven.

The levers K are pivoted to cars 7L on the sleeve If and carry weights K upon their outerends. They are drawn into a position approximating parallelism with the shaft II by the force of the spring M when the machine is at rest; but when the machine is in motion the centrifugal force causes said weights to separate, compressing the opening, and, through the various connections presently to be described, to draw the clutch-faces into engagement.

Extending out from the clutch part J and passing through the hub of the pulley I are connecting-rods L, which are connected at one end with the annular ring J, which rests in a groove formed in the said clutch part J and is thus enabled to move the same longitu dinally, while free therefrom in respect to revoluble motion, and at the other end by means of links I. to the levers K, and thus as the levers spread under the influence of the centrifugal force mentioned said clutch part J is drawn forcibly against the clutch-face 0n the pulley I, as will be readily understood.

The spring M surrounds the sleeve II and is located between a collar 7L2 thereon and an annular ring I, which engages with and is operated by the rods L. Under the operation of centrifugal force, as before described, the rods L are drawn through thehub of the Dulley I and as they move compress said spring M. \Vhen the machine is at rest and the centrifugal force no longer is active, the spring serves to force back the rods L, and thus force the clutch part J out of contact with the clutch-face on the pulley I.

The foregoing is a description of the construction of parts which has been designed by me in carrying out my invention. As will be readily understood, however, there may be many changes in details of construction which will readily occur to persons skilled in the art without departing from my said invention.

lfaving thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. The combination of a threshing-machine orseparator,a grain-elevator connected thereto, a grain-conveyer adapted to receive grain from the separator and convey the same to the elevator-foot, a clutch connected to the shaft of said conveyer, and mechanism operated by centrifugal force adapted to throw said clutch into operative position when the machine is running at its normal or high speed, and to release said clutch when the machine is running at a slow speed, whereby said conveyor is caused to discharge into said elevator-only when the machine is running at the predetermined speed.

2. The combination of a threshing-maehine, a grain-elevator, a conveyer connected to said threshing-machine and adapted to receive the grain therefrom and discharge into the foot of the elevator, a sleeve on the shaft to said conveyer, a pulley on said sleeve and forming or carrying a clutch part, a second clutch part mounted on said shaft, and mechanism also mounted on said sleeve and adapted to draw said clutch part into contact with the clutch part on said pulley, said mechanism embodying centrifugally operated weights, and a reversely-operating spring,whereby the clutch-faces are thrown into contact when the machine is running at a high speed and thrown out of contact as the speed decreases or ceases, substantially as and for the purposes set forth.

The combination of a threshing-machine or separator, a pneumatic elevator attached theret0,a conveyer discharginginto said pneu- 1n atic elevator,said conveyer-shaft being continued through and projecting upon the opposite side of the separator, a sleeve mounted upon the projecting end of said shaft and adapted to revolve thereon but held from longitudinal motion in respect thereto, a pulley embodying or carrying a clutch-face and mounted on said sleeve, asecond clutch part mounted on the shaft and adapted to move longitudinally thereof but provided with means for preventingrotary motion thereon, connecting-rods connected to said clutch part and extending through said pulley, pivoted levers carried by said sleeve, and links connecting said pivoted levers to said rods, said levers being adapted to be thrown apart by centrifugal motion, and a spring acting 0ppositely to said levers, said several parts be ing arranged and operating substantially as shown and described.

In witness whereof I have hereunto set my hand and seal, at Indianapolis, Indiana, this 11th day of September, A. I). 1897.

JOHN O. MORGAN.

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